Permutation-lock foe electric switches



0. K. KLEIN.

PERMUTATION LOOK FOR ELECTRIC SWITCHES.

APPLICATION FILED 0:931. WI?- 1 ,3 14,749. I Patented Sept. 2,1919.

552911931621 WW M r illil 'dllfll lllw citizen of the United States, andresident of Cleveland, in the countyof Ouyahoga and.

UNITED STATES PATENT OFFICE.

i A OSKAR K. KLEIN, or CLEVELAND, OHIO.

PERMU'IATION-LOCK non ELncTnIo SWITCHES.

To all whom it mag concern.-

Be known that I, OsKAn K. KLEIN, a

State of Ohio, have invented certain new and useful Improvements inPermutation-Locks for Electric Switches, of which I hereby de- :clarethe following to beat full, clear, and

vide a combination lock and casing for the exact description, such aswill enable others skilled in the 7. art to which it appertainstomakeanduse the same.

Theobjectsof the invention are to proelectric startingswiteh of anautomobile.

The invention also includes means for locklng the retaining bolt for thecasing so that it can not be removed from the ma- The inventioncomprisesa casing provided with a depressible inner plate, which I contains aseries of keyholes, and which is employed in connection with acorresponding series of rotatable keys each having a web which will passthrough its similarly shaped keyhole when in the properly adjustedposition but will prevent the movement of the depressible plate untilthe exact combination of all the keyholes and keys has been formed.

It includes a depressible and rotatable key for operating the electricswitch which is normally held out of engagement therewith and isprevented from rotation until the proper position therefor has beenobtained.

It also includes a retaining bolt, or screw for the casing, themovements of which are also controlled by the position of thedepressible plate which contains the combination key holes.

The invention is. illustrated by means of the accompanying drawings andis hereinafter further described, and specifically claimed.

In the accompanying drawings Figure 1 is front elevation of the device;Fig. 2 is a side elevation thereof; Fig. 3 is an enlarged frontelevation of the casing; Fig. 4 is a transverse section thereof; Fig. 5is a bottom view.

In these views A is the casing which is detachably secured to the switchbox B by means of the clamping bar 0 and a screw threaded bolt D whichenters a screw threaded opening E in the switch box.

Specification of Letters Patent. 1

responding number of numerals or, agreater number are shown at K uponthe outside of thecasingonly one in each series of which correspondswith the right key hole.

The switch member L is provided with spaced openings andla depressibleand rotatable key N is mounted in the casing and is provided with lugs OO which when the key is depressed engage the openings M and by rotatingthe key the switch can be turned.

In Fig. 4 the plate F which contains the key holes J J is shownin raisedand locked position and the central key N is rotatable in the casing andin the plate F but cannot be depressed or lowered until the said plate Fis unlocked or released. A central key or main pin N which is raised outof engagement with the switch me1nber L in said Fig. 4 has its lug Tlocated at the upper face of the casing and adapted through the rotationof the pin N to be carried into and out of register with the notch V.When the plate F is unlocked and released by a proper operation of thekeys I and the lug T turned into register with the notch V, thecompressed spring P, which is interposed between the casing and theplate F will expand and force the plate F and the central key Ndownwardly and carry the lugs or projections O of the flange or head Qinto engagement with the recesses M of the switch member L. This willpermit the switch member to be operated by the central pin or key. Thecentral pin or key is adapted to be drawn upward out of engagement withthe switch member L and it is adapted to carry the plate F to theposition shown in Fig. 4 of the drawing. The pin N is then adapted to bepartially rotated to carry the lug T out of register with the notch Vand the keys I may then be rotated to carry the webs H ontof registerwith the key holes of the plate F which will be locked against downwardmovement by the said webs or projections H.

The locking bolt D can only be turned atented Sept. 2, 1919. Applicationfiled December 31, 1917.1 Seria1Nc 2 09fl46.

claim as new' andde s ir'eto secure'by Letters is raised a Web R uponthe sideof the bolt on screw D enters a holes the said plate andthescrew can not be turned to release it;- a The key N is normally-- heldout of -,en:;

gagement with the switch by means of a pm T which can be released.through the slot-V in the casing; also it will be seen that the key Ncannot be rotated until the lug is raised above slot arid hence cannot"be employed to rotate the switch until the plate is lowered andthespring]? on which it rests and which is expand ed, y 1 Y i Havingdescribed the inventiontwhat l prevents its movement Patent is' l. Alook of the class describedfincludj ing a casings plateverticallyinovjablejin the casing, a key mounted ror retaiy m ve ment inthe casing and in the said provided with means a for gagin 'the casing.or holding the plate'and the key in anelevated'position, a spring mount;

ed on the said keyahd arrangedto u ge the war saine to' leek thesaidp'l'atein elevated In resumes-y wher eof, I hereunto set my harid ll ea dt e y dow ward y. 11 dly when'the said key and platev are freevided with means for engagingthe plate fi'for locking 'thesamef in anelevated position. I r

2. A look of the class described including a casing, a plate. verticallymovable-in the 'tasingand 'pro'vided -with key holes, a key mounted forrotary movement in the casing and in the vsaid plateprovided with 'efibr engagin the easin for holding] the plat and the said' key in anelevated position; a s'p'rihg mouiited on. the said key and arranged tourge-the plate and-the keyfsbwswaraly 'br 1 1w ardly' when the said "tomove in such direction, and a plurality of lock ng keys mounted on thecasing and prokey and plate are free toj move in such di e-seesaw aplurality of lockinglkeys". r

'throu'gh thekeylholes and"form-"{fl'-' ing guides-for thevertically-'movable plate i and provided with means-r0 5 ,engaging'the:

position;

immense-er; "CI-Iris SIPEQI (toiai'esofthi's'patht may be obtai'ii'd for"five cents each, addressing the commissionr of I E'atents,"

Washington, DZCJ os'IiARK-KLEIN; e i p

